CVE-2025-21203: Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21203?
CVE-2025-21203 is classified as a medium severity vulnerability due to the potential for unauthorized information disclosure.
How do I fix CVE-2025-21203?
To fix CVE-2025-21203, apply the relevant patches provided by Microsoft for your affected Windows Server version.
Which Windows Server versions are affected by CVE-2025-21203?
CVE-2025-21203 affects multiple versions, including Windows Server 2022, 2019, 2016, 2012 R2, and Windows Server 2008 R2.
What type of vulnerability is CVE-2025-21203?
CVE-2025-21203 is a buffer over-read vulnerability in the Windows Routing and Remote Access Service (RRAS).
Can CVE-2025-21203 be exploited remotely?
Yes, CVE-2025-21203 can be exploited remotely, allowing attackers to disclose information over a network.
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